TY - RPRT TI - A reexamination of the turquoise group: The mineral aheylite, planerite (redefined), turquoise and coeruleolactite AU - E.E. Foord AU - J.E. Taggart PY - 2018 DO - 10.1180/002646198547495 UR - https://pubs.usgs.gov/publication/70020208 ID - 70020208 ER -